Draft-regulator for pipes



Patented Peb. 5, 1884.

n. PETER; Pmumm. wmmgm n c v(No Model.)

L. Y. LENHART.

DRAFT REGULATOR FOR PIPBS, FLUES, AND VENTILATORS. No. 293,043;

UNITED. STATES PATENT OFFICE.

LEWIS YOUNG LENIIAET, oF RED WING, MINNESOTA.

DRAFT-REGULATOR P|PES,`FLUES, AND VENTILATORS.

SPECIFICATION forming part of Letters Patent No. 293,043, dated February5, 1884.

Application filed December 24, 1881. (No model.) K

'o LM whom it may concern.-

Beit known that I, L. Y. LENHAET, of Red Wing, in `the county of Goodhueand State of Minnesota, have invented a new and useful Improvement inDraft-Regulators for Pipes, Flues, and Ventilators, which improvement isfully set forth in therfollowing specification and accompanyingdrawings, in which- Figure 1 is afront elevation ofapipe equipped withmy improved draft-regulator for pipes. Fig. 2 is a horizontal sectionalview of the up; per part of therpipe through line x x of Fig. l. Fig. 3is a perspective elevation of the pipe, showing how the wings areformed; and Fig. 4 is a perspective elevation of the fan andscrew-con'veyer.

The object of my invention is to provide a draft-regulator for pipes,and also so adapted as to increase the draft and extinguish sparks, aswill be hereinafter more fully described, reference being had to theaccompanying drawings.. y

In the drawings, A represents an ordinary joint of stove-pipe. At theupper end four opposite slits, C, are cut, extending downward a suitabledistance. At their base transverse slits D are cut across, so that theleavesBhave `only about onethird of their base remaining.

The leaves b are thenbent outwardly, as shown in'Figs. 2 and 3, thusforming four openings for the entrance of air. The pipe thus`constructed is covered by means of an ordinary top or cap, E. Within thepipe is the vertical shaft F, socketed centrally to a cross-piece, G,below, the upper end of the shaft being journaled centrally in the domeof the pipe. The upper end of this shaft is provided with blades orwings H, whichl are in such a position that the air or blast as itpasses through the openings formed by the wings B ofthe pipe will strikethem and cause them to turn in one direction only. Belowl the blades H avane, I, is secured to the vertical shaft F.

The operation is as follows: The product of combustion and heated airpasses up through the pipe A and acts against the vane I., causing it.to revolve when the force of the wind is not suflicient to accomplishthis. Vhen, however, the wind blows, it enters the apertures at thewings B, striking the blades H, causing the shaft and vane to revolverapidly. The vane, therefore, acts as a conveyer and prevents the draftfrom goingdown the iiue.

III practice, the blades H are somewhat shorter than the wings B, so asto prevent a space between the blades and down the pipe, therebypermitting the air to pass out with greater facility.

I am aware it is not new to provide draftregulators with vanes andblades, and also others having the outer casing, shell, or cylinderconstructed with wings, and I do not claimV this, broadly. My inventionhas special ref` erence to the arrangement and combination of thecylinder wings, vane, and blades, whereby it may be cheaply and easilyconstructed.

Having described my invention, what I vclaim Is-` Y I As a, new articleof manufacture, the draftregulator consisting of a pipe, A, thetangential wings B, formed by cutting the end of said pipe verticallyand horizontally, the conecap Fl, secured directly to the top edges ofsaid wings, the central rotary shaft, F, the dat radialblades H,arranged on this shaft in the plane of the openings between the wings B,the spiral vane I, and the cross-step G, all constructedand adaptedV tooperate as shown and described.

LEWIS YOUNG LENHART.

Vitnesses:

O. M. HALL, lV. S. HUBBAED.

